Built across the majestic River Vaigai near Andipatti, the dam with a height of 111 feet can store 71 feet of water. It is 7 kms from Andipatti, 14 kms from Theni and 70 kms from Madurai. This dam was opened on January 21, 1959.
The dam is unique for the sylvan garden around it. The stillness and quiet are soothing to the mind. The garden deserves the surname "Little Brindavan". It is a popular picnic spot for the local population, particularly school children. There is a separate play area for the Tourist. 
Vaigai Dam
where the River Kaveri enters the plains. The dam is one of the oldest in India., It provides irrigation facilities to Salem, Tiruchirappali and Thanjavur district for 2,71,000 acres of farm land. There is a lovely park close to the dam. Big industrial units are also located here. Another dam around Salem is the Kodiveri Dam, which is near Gobichettipalayam, a beautiful picnic spot and a good place for film shootings.
Mettur Dam
Papanasam dam is located 49 kms from Tirunelveli while Manimuthar Dam is 47 kms away. Panathertham, the origin of the Tamaraparani River is close to Papanasam. With nice gardens and pleasant weather both these spots are ideal for picnics
Manimuthar & Papanasam Dams
Sothupparai dam is located 12 kms from Periyakulam. This dam is built across the Varaha river. It is a beautiful picnic spot. The wide expanse of stored water is an impressive sight. 
Sothupparai Dam
Karikala Cholan(2nd century AD) initiated construction of the Grand Anaicut by raising flood banks in the river Cauvery to irrigate the wasteland beside the river. This ancient dam consists of a solid mass of rough stone and clay, stretching across the river Cauvery. It is a fine picnic spot. 
Grand Anaicut

Perunchani Dam is an irrigation dam at Perunchani, Kanyakumari District, in the state of Tamilnadu, India. The Dam area is about 42 km from Nagercoil, the administrative headquarters-town of Kanyakumari District, and about 10 km from the town of Kulasekhram.

The dam is built between two hillocks (part of the Western Ghats) across the river Paralayar. It is a straight gravity masonry dam of 373.10 metres long consisting of 275.28 metres of bulk head section. A drainage gallery of 1.52 ´ 2.29 metres has been provided in the middle river section for a length of 45.70 metres which serves a longitudinal inspection chamber as well as an outlet for the seepages from the foundation.The dam is set amidst the hills of the Western Ghats and commands a picturesque view of the hills and lush greenery around.

Perunchani Dam
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DAMS IN TAMILNADU